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The frequency of a wave of light is 12x 10 14s-1. The wave number associated with this light is:
(1) 5x10-7m
(2) 4x 10 -8 cm-1
(3) 2x 10-7 m-1
(4)4x10 4cm-1
Ans: 4x10 4cm-1
Electrovalent bond formation depends on: (1) Ionization energy (2) Electron affinity (3) Lattice energy (4) All the three above Ans: All the three above
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The number of d electrons in Fe +2 (atomic number of Fe= 26 ) is not equal to that of the: (1) p-electrons in Ne (At. No.= 10) (2) s-electrons in (At. No.= 12)
Thin layer chromatography (TLC) Detection of excessive levels of one or more amino acids in blood plasma or in urine is often crucial for diagnosis of a group of genetic (inheri
sho me the s p d f orbitals shape
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